| Rare Earth Stearates as Thermal Stabilizers for Rigid Poly（vinyl chloride） |
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| 引用本文： | 郑玉婴 蔡伟龙 傅明连 王灿耀 张星. Rare Earth Stearates as Thermal Stabilizers for Rigid Poly（vinyl chloride）[J]. 中国稀土学报(英文版), 2005, 23(2): 172-177 |
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| 作者姓名： | 郑玉婴 蔡伟龙 傅明连 王灿耀 张星 |
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| 作者单位： | College of Chemistry and Chemical Engineering，Fuzhou University，Fuzhou 350002，China，College of Chemistry and Chemical Engineering，Fuzhou University，Fuzhou 350002，China，College of Chemistry and Chemical Engineering，Fuzhou University，Fuzhou 350002，China，College of Chemistry and Chemical Engineering，Fuzhou University，Fuzhou 350002，China，College of Chemistry and Chemical Engineering，Fuzhou University，Fuzhou 350002，China |
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| 基金项目： | ProjectsupportedbythePlanningCommissionofFujianProvince,CountInvestmentinFujian[2002]161andtheScienceand TechnologyFundofThreeProjectsofFujianProvince(K2002009) |
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| 摘 要： | Poly(vinylchloride)(PVC)isoneofthefirstthermoplasticsdevelopedandhassomeenormoustechnicalandeconomicimportance.However,itspoorthermalstabilitystillremainsoneofitsmainproblems.ThermaldegradationofPVCoccursbyanautocatalyticdehydrochlorinatingreactionwiththe…
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| 关 键 词： | 热脱去氯化氢 聚乙烯 硬脂酸盐 稀土元素 稳定性 |
Rare Earth Stearates as Thermal Stabilizers for Rigid Poly(vinyl chloride) |
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| Zheng Yuying,Cai Weilong,Fu Minglian,Wang Canyao,Zhang Xing. Rare Earth Stearates as Thermal Stabilizers for Rigid Poly(vinyl chloride)[J]. Journal of Rare Earths, 2005, 23(2): 172-177 |
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| Authors: | Zheng Yuying Cai Weilong Fu Minglian Wang Canyao Zhang Xing |
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| Abstract: | A series of stearates with different rare-earth ion were investigated as thermal stabilizers for rigid PVC at 180 ℃ in air. Their stabilizing efficiency was based on measuring the rate of dehydrochlorination. The resulted revealed the higher stabilizing efficiency of the investigated rare-earth stearates as thermal stabilizers for rigid PVC compared with the thermal stabilizers for industry: calcium stearate, zinc stearate, butyl stannum mercaptide, phosphite esters, β-diketone and epoxidized sunflower oil. This was well illustrated by longer incubation period (TS) values and lower rate of dehydrochlorination. The stable efficiency was affected by the nature of rare-earth element's individual electronic shell. The mechanism for the stabilizing effect of rare-earth stearates was proposed. The result was experimentally proved based on IR spectrum. |
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| Keywords: | poly(vinyl chloride) thermal dehydrochlorination rare-earth stearates stabilization mechanism conductivity method congo red test |
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